What is an anthropic principle?
The anthropic principle is the idea that the universe must be compatible with the existence of conscious life because if it were not, we would not be here to observe it. It suggests that the fundamental constants and conditions of the universe are finely tuned to allow for life as we know it. There are different versions of the anthropic principle, ranging from the weak form, which states that the universe must be suitable for life because we exist, to the strong form, which posits that the universe was specifically designed for the emergence of intelligent life.